Note the taller and bolder transmission towers.
The most visible work is taking place north of Mid Town Road.
11/24/2017 update, "Newly reconstructed McKee Road from County Trunk Highway M to just west of Maple Grove Drive", starts here.
11/7/2017 update, "Early stage of CTH M reconstruction to urban standards", starts here.
Original 3/7/2017 post, "Dane County Highway M reconstruction: From Prairie Hill to Cross Country", starts here.
A joint project with the cities of Madison and Verona.
 McKee Road intersects with County Trunk Highway M in the middle distance.
Photos by Retiring Guy
 The intersection of McKee Road and County Trunk Highway M as seen from the western terminus of Raymond Road.
This 42,500,000 project will reconstruct CTM to urban standards.
Source: City of Madison Engineering